SYNTHESIS AND CHARACTERIZATION OF A NOVEL BORON-CONTAINING ALUMINUM BASIC CHLORIDE

被引：21

作者：

YU, JH ^{[1
]}

XU, RR ^{[1
]}

KAN, QB ^{[1
]}

XU, YH ^{[1
]}

XU, BQ ^{[1
]}

机构：

[1] DALIAN UNIV TECHNOL,SCH CHEM ENGN,DEPT CHEM,DALIAN 116012,PEOPLES R CHINA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1993年 / 3卷 / 01期

关键词：

ALUMINUM BASIC CHLORIDE; CATALYSIS; BORON;

D O I：

10.1039/jm9930300077

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel boron-containing aluminium basic chloride [B-C(1)] has been hydrothermally synthesized in the system B2O3-Al2O3-MxO-H2O (M = Li, Na, K, Mg, Ca, Ba; x = 1 or 2) and characterized by X-ray diffraction (XRD), inductive coupled plasma-analysis (ICP), scanning electron microscopy (SEM), infrared spectroscopy (IR), magic-angle spinning nuclear magnetic resonance spectroscopy (MASNMR) and thermal analysis techniques. There are significant effects due to pH, temperature and type of ion in the reaction mixture on the crystallization products. Chemical analysis shows that B-C(1) has a composition of B0.15Al9.85O9(OH)10Cl2. The crystal is indexable on an orthorhombic unit cell with a = 19.27 angstrom, b = 14.80 angstrom, and c = 8.55 angstrom. B-C(1) may undergo thermal transformation sequences involving gamma-, delta-, theta-, and alpha-aluminas at different temperatures. IR spectroscopy and temperature-programmed desorption of NH3 (NH3-TPD) reveals that there are predominantly Lewis acid sites of medium strength on the surface of B-C(1). It can be shown that B-C(1) is an excellent catalyst for the selective synthesis of but-2-ene from ethanol.

引用

页码：77 / 82

页数：6

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